We have previously shown evidence that some individuals seem to consistently minimize low back loads when lifting, while others do not. However, it is unknown why. Individual differences in ability to perceive relevant sensory information may explain differences in minimization of low back loads during lifting, consistent with considering load reduction in one’s movement objective in an optimal feedback control theory framework. The purpose of this study was to investigate whether individuals’ ability to perceive proprioceptive information (both force- and posture-senses) at the low back was associated with peak low back loads when performing generic or occupation-specific lifts. Seventy-two participants were recruited to perform 10 barbell (generic) and backboard (occupation-specific) lifts, while whole-body kinematics and ground reaction forces were collected. Peak low back compression and anteroposterior shear forces normalized to body mass were calculated as dependent variables. Both posture matching ability and force matching ability at the heavier force targets were associated with lower means and variability of peak low-back loads in both lift types, albeit with small effect sizes (R² ≤ .17). These findings support the utility of an optimal feedback control theory framework to explore factors explaining interindividual differences in low back loads during lifting. Further, this evidence suggests improving proprioceptive ability may be a useful strategy in lift training programs designed for workplace injury prevention.

我们之前的证据表明，有些人在举重时似乎始终将低背部负荷降至最低，而另一些人则不然。然而，尚不清楚原因。感知相关感官信息的能力的个体差异可以解释举升过程中低背部负载最小化的差异，这与在最佳反馈控制理论框架中考虑减少一个人的运动目标的负载一致。本研究的目的是调查个人在进行一般或特定职业举重时感知腰部本体感觉信息（力感和姿势感）的能力是否与腰部峰值负荷相关。招募了 72 名参与者进行 10 次杠铃（通用）和背板（特定职业）举升，同时收集全身运动学和地面反作用力。计算标准化至体重的峰值腰背压缩力和前后剪切力作为因变量。较重的力目标的姿势匹配能力和力匹配能力都与两种举升类型中峰值腰背负载的较低均值和变异性相关，尽管影响大小较小（R ²  ≤ .17）。这些发现支持使用最佳反馈控制理论框架来探索解释举重过程中低背部负载个体间差异的因素。此外，这一证据表明，提高本体感觉能力可能是为预防工作场所伤害而设计的举重训练计划的有用策略。